The BE Pressure TP-4013HM is a 4-inch self-priming trash pump matched to a Honda GX390 11 HP commercial gas engine. It is the size of pump general contractors, excavators, and rental fleets reach for when a 2-inch or 3-inch pump cannot keep up with the inflow on a flooded basement, an excavation pit, or a stormwater event. At 506 GPM and 92 ft total dynamic head, this unit moves water roughly 2.5x faster than a typical 2-inch trash pump and handles solids up to 1.6 inches in diameter without shredding the impeller.
Why a 4-inch matters for dewatering jobs. Pump capacity scales roughly with the cross-section of the suction line. A 2-inch pump pushes water through a hole the size of a soda can; a 4-inch pump pushes water through a hole the size of a coffee can. On a job where the inflow is faster than the pump output, the only way to win is a bigger pump. The TP-4013HM gives the operator real margin: most dewatering jobs that are sized for a 3-inch run with the 4-inch idling at half throttle, which means longer engine life, lower fuel burn, and less screaming-engine noise on a residential street.
Specifications
- Suction port: 4 inches NPT
- Discharge port: 4 inches NPT
- Maximum flow: 506 GPM (30,360 GPH) at 0 head
- Total dynamic head: 92 ft
- Maximum suction lift: ~26 ft
- Solids handling: up to 1.6 inches
- Engine: Honda GX390, 11 HP, OHV, single-cylinder, recoil start, low-oil shutdown
- Fuel tank: approximately 6.4 quarts (Honda GX390 standard)
- Pump body: cast iron volute, replaceable wear plate, mechanical seal
- Frame: heavy-duty steel roll cage with lifting points
- Approximate weight: 200+ lbs
Use cases the TP-4013HM is right-sized for
- Construction-site dewatering. Excavation pits, footing drains, foundation cuts in clay soils where seep is constant.
- Storm response. Flooded parking lots, basements, retaining walls. The 1.6-inch solids handling is critical when the water has leaves and gravel in it.
- Agricultural and irrigation transfer. Pond drawdown, irrigation pickup from a creek or shallow well.
- Municipal and emergency-services rental fleets. Honda GX390 is the de-facto rental-fleet engine because parts are everywhere.
Frequently asked questions
What size hose do I need?
4-inch suction and 4-inch discharge. Going smaller (running a 4-inch pump with 3-inch hose) cuts capacity dramatically and wastes the engine. The pump comes with port adapters; hose, strainer, and camlock fittings are sold separately.
Can it pump muddy water with debris?
Yes. The TP-4013HM handles solids up to 1.6 inches - leaves, twigs, mud, gravel, small construction debris. It is not designed for septic, sewage, or chemical service. For sewage applications use a dedicated diaphragm or solids-handling sewage pump.
How long will the GX390 run on a tank?
Honda rates the GX390 at roughly 2.5 hours at full load on its standard tank. On most dewatering jobs the pump is not at full throttle the whole time, so 3-4 hours per fill is typical. Carry a spare 5-gallon can for shifts longer than that.
How does it compare to a 3-inch pump?
A 3-inch pump tops out around 250-300 GPM. The TP-4013HM nearly doubles that. For a small basement or a sump-replacement job a 3-inch is fine. For a job where the inflow is unknown - storm cleanup, foundation excavation in wet soil, drained pond - the 4-inch buys margin.
What maintenance does it need?
Daily: check engine oil, fuel, hose connections, and the pump-body drain. After every job, drain the volute completely to prevent freeze damage in cold weather. Honda's standard schedule covers air filter, spark plug, and oil change at the engine; the pump itself needs the wear plate inspected at about 200 hours and the mechanical seal replaced if it weeps.
Why order the TP-4013HM from Discount Cleaning Products
Fully assembled (no engine-to-pump alignment in your shop), and a service relationship with BE Pressure that lets us pull warranty parts quickly when something goes wrong on a billable rental. If you are deciding between a 3-inch and a 4-inch trash pump, call us and walk through the job - we have helped enough dewatering crews to size this right the first time.